Anyone can start from no experience.
However, there is a learning curve. You realy shouldn't expect to become some crack shot virtuoso the first time.
Some people have a knack for it, some people don't. There's an entire universe in between. For example, I loooove a good rifle, but handguns can suck a fuck. It's also a perishable skill. If you don't practice, it's hard to keep up.
Go rent a gun at a range and give it a try 3 or 4 times and see how you like it.